添加 MajorMyService。

ruoyi-sim/src/main/java/com/ruoyi/sim/service/my/MajorMyService.java

@@ -0,0 +1,13 @@
+package com.ruoyi.sim.service.my;
+
+import com.ruoyi.sim.service.IMajorService;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+
+@Service
+public class MajorMyService {
+
+    @Autowired
+    private IMajorService majorService;
+
+}